Auxiliary picture reproducing apparatus



March 23, 1937 F. G. SALCEDO AUXILIARY PICTURE REPRODUCING APPARATUSFiled May 21, 1934 iadzhand Jalcedo INVENTOIL 55 beam, 119W PatentedMar. 23,1937- nfiinilmnv rrc'mnn ngarnonucme Ferdinand G.

to Royal-Rem gan satin, Hollywood, Oalit.,assignor.

es, Ino. a corporation of Michi- Application May 21, 1934, serial no,726,788 (on. 88-24) This invention relates to means for reflecting.light from the beam radiating from a projection lantern so that thepicture projected maybe projected on two screens.

More particularly the invention relates to a revoluble reflecting mirrorand stand therefor, the stand being arranged so that the mirror may beadjusted to desired relation with the light beam'. arid there held.

10 This-finvention will be better understood from the followingdescription when considered inconnection with the accompanying drawingand the scope thereof will be particularly pointed out inwhatisclaimed.In the drawingd Fig. 1 represents a diagrammatic perspective view of theassembly which through actual tests has been found mostv desirable toeffect the dual sharp projection in question. 1 Fig. 2 is an enlargedperspective .view of the reflecting device used herein. j

lieferring in-detail to the drawing, in Fig. 1

is shown -a bioscope I, which projects rays 2 whereby annoying pictureis directed upon a miniature-screen (not showniig." a Thereflector-device is indicated'in general at 4. 4 Inthe drawing themirror," oivthe device 4 is shown placed at 45 degrees to the mainbeamof light 2. This mirror directs a portion of the?- main beam 2 as anarrow beam of light on to the" first lens l2; Said lens #2 concentratesthe ray of light thus reflectedand produces a'smail image just beyondsaidlensf'ILapproximateIy at Ilia, in-.the diverted beam 01' light. LensI21 should be an anastigmatic 'lens F/2.5 or faster. The focal length "ilens i2 should b'e reduced as much as which order to create at lea assmall an image as possible; x 1' I A ifocus'ing lens ".picks up theimage1 created bylens li at' lfia, and projects said image upon ror l9.'Uppnencountering mirror l9,fthegin iige will be inverted. Mirror I9 islaced at an angle of 45 degrees withrelation to the light be so as todirect" the beam, now designated 1' ,up w'ardly "upon a second mirror20, the latter mirror being so.- positioned that 'the. beam, designated-"20b; is l divertedjn a 'generallyho ontaldirectionfsubstantiallyasshown. T 5o. dtthis stage of its advance theimagefF'has been turnedi,from its-upright. position-thru an ,angle ofnin'etyflegrees, that is to say,a quarter of aturn. The reflected beaninext en'cdunters the thirdmirror 2|. mirror -di'rectsthe 2| b,approximately horiilected ray lipdesirably between v and it. Wheneversaid shutter is closed; the picture on, the subsidiary?screenJSis-ObIitei'atedC Ii desired, said shutter may be electricallyop-' -erated'*by remote control. I g 2 enlarged view or the'beazndeflecting device set screw 45' ise'mployedto secure sleeve= Said baseisshown having a slot, 41 to Y 'shaped as substantially ajiuadrant, it:one-fourth' of thelight which it inter obtained the brllliany' of ,w

zontally upon the fourth mirror 22. From m ir' 1 ror 22 the beam, as

22b, is directed upwardly against the fifth mirror 23,thence, as beam23b in a backwardly horizontal direction-against the sixth and finalmirror; 24, whenceas beam 242: it is projected upon the subsidiaryscreen 5 mounted uponthe panel I. Henceit will be seen that, afterpassing thru a plurality of lenses and being reflected from one toanother 01' 'a series 01' mirrors, as may be necessary to'avoidinterven- 10 ing opaque objects, the image received by the mirrororreflector 40; is finally directed upon the subsidiary or auxiliaryscreen 5 shown at the left .end of Fig. 1. Said screen '5' is shownmountedwithin an ornamental panel l4 which presumably 15 will be locatedin front of the theater. Aspeak er grill I5 is shown in said'panel abovesaid screen.

A shutter or beam obstructing deviceis "pro r 'cepting the -de-' 20 thelenses l2 vided. for the purpose 101" int is disclosed in. Fig. 2 wherea-segmental, rotary mirror 4ll is she a .Said mirror has its apexportion furnisheil' with' a hub which. is se- 1 cured 't'o theshaift' 42of. a-motor 43, a 'co tei 8 weight arm projecting from the opposite sideoi' said hub. The motor shank 45 is'shown ad- I fjustably supported in aturnable and extensible Y manner upomthemotor base 46. "This adiustqment is' TproVided for by a sleeve 44" to .receivge the stem or shank45, and suitablemeans as-a';

receive a bolt 48 whereby ,the wholemotor unit may beadjustablysecuredto a suitable support. The motor must,fof course, moun'tdoutoi the path oi the light-\ray-which is 'tobinter cepted by the rotatablemirror 40.

the motor rotates the segmentalniirror 340 rapidly across the beam 2,for. successive very- 45 small time intervals it deflects the entirebeam. Whn, as shown, the segmental-mirror. is

will-refleeti dents. 4

' =The operation of said mirror will fere materially with thesimultaneous-projection of the moving pictures upon the'main screen.By'increasing the speed of the. motor a more persistent. picture on thesubsigitatzy screen will be has thesteminthe not interwillbeldirectlyuproportional to the size in degrees of the sector of the revolvingtarget used.

It is intended that the motor, used to operate the rotary mirror 40, beequipped with an ad- 5 justable speed-varying device in order to obtainas high or as low a speed as the system may require.

I claim:

The combination wi th a projection lantern 1 adapted to project a lightbeam, of means to intercept and reflect the emitted rays at spaced timeintervals, said' means comprising a support in front of said lantern andbelow said beam of light, an elongated base member resting on said 5support and having an'elongated slot at one end,

a clamping bolt extending through said slot and v engaging said support,said bolt serving to clamp FERDINJAND G. SALCEDO. l5

